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一块长方形地ABCD的长为12m,宽为5m,小明站在长方形的一个顶点A上,他要走到另一顶点C处捡一个羽毛球,至少走多远? 初中英语现在完成时选择题：（请解释原因） He____Luzhou for three month初中英语现在完成时选择题：（请解释原因）He____Luzhou for three months.A.has left B.has come to C.has gone toD.has been away from It ___ like three months!A.hears B.looks C.feels D.gets I have studied English for three months. 消防声光报警器的安装高度是多少 It means Danger ,It means you shouldn't什么? （）3、What does it mean?It means you shouldn’t .A.smoking B.smok C.smoke1.the,have,take,good,a,medicine,and,rest(.)______________________________________________________________ 为什么用热的碱性溶液洗涤粘有油脂的器皿效果好 油脂只能在碱性溶液中水解?只能在碱性溶液?有别的么? Consumers want their incomes to __ so as to keep up with rising prices.A.add B.raise C.increase D.Consumers want their incomes to __ so as to keep up with rising prices.A.add B.raise C.increase D.enchance With food prices keeping rising,the days are gone _ we could buy a good meal for under $5A.which B.when C.whether D.where 咏叹日和月的诗句 英语翻译完整句子：The two countries are each other's second-largest trade partners,with bilateral trade volume rising to $385 billion in 2010.整个句子能理解,但 with bilateral trade volume rising to $385 billion in 2010.的with不知 [-B69] Now that energy prices are rising so rapidly,further prices are very untertain,and the risk ________ a new investment depending on them may fail is greater．A． by which B． that C．of D． in that翻译并分析 [W14] Now that energy prices are rising so rapidly,further prices are very uncertain,and therisk ______ a new investment depending on them may fail is greater.A.by which B.of C.that D.in that翻译,并分析. 一句英语翻译：按电源开关关闭电源. 三极管集电极与发射极是导通的吗?如果不导通电阻是多大?怎么计算?麻烦知道的大虾告之,说得简明扼要点, 三极管导通时的电阻该如何确定? 为什么可用碱液洗去油脂 为什么用热的碱溶液洗涤粘有油脂的器皿效果好如题 三极管导通跟电阻R3 有关系吗只知道Ube要大于零点七 但是R3 这个不知道对三极管导通有什么作用? 谁可以告诉我几句咏叹人生的诗句? 咏叹月亮的诗句 仿写 成长是一首诗,咏叹着时光的幸福回忆；（ ）,（ ）；（ ）,（ ）.急 滑动摩擦力可以不做功吗?由于两个物体间发生相对滑动,一直在相对错位.就例如擦黑板,同学给我解释道,由于黑板受到了滑动摩擦力但是却静止着所以没有对黑板做功.但是我觉得这个参考系 三极管的导通电压多大? 电阻用多大的啊 三极管是什么型号的 3003铝板阳极氧化后表面出现水波纹,是怎么回事?主要跟哪些因素有关?急~~阳极氧化用冷轧板好还是热轧板好?大部分都说是热轧板好,为什么? 专属翻译成英文? 基极电阻的大小,会影响三级管的导通吗?比如串联一个很大的电阻,会有影响吗? 一些富有哲理的句子并解释 PROTEL中整流二极管的PCB封装是什么?做好封装了以后,怎么放进去二极管?